10 1 production forecast em
DESCRIPTION
10 1 Production Forecast EMTRANSCRIPT
Re
serv
oir
Re
serv
oir S
imu
latio
n
Sim
ula
tion
--P
rod
uctio
n
Pro
du
ction
F
ore
cast
Fo
reca
stF
ore
cast
Fo
reca
stE
tien
ne
MO
RE
AU
�In
trod
uctio
n
•W
hy
run
aflo
wsim
ula
tion
?
•M
ath
em
atica
l&N
um
erica
lco
nsid
era
tion
s
•E
CLIP
SE
Re
min
de
r
Ou
tline
�D
ata
rev
iew
•S
pa
ce&
Tim
eD
iscretisa
tion
•R
ese
rvo
ird
escrip
tion
•F
luid
de
scriptio
n
•In
itial
Sta
te
•A
qu
ifer
&W
ell
rep
rese
nta
tion
•F
low
de
scriptio
n
© 2010 -IFP Training2
•F
low
de
scriptio
n
�H
istory
ma
tchin
g
�P
rod
uctio
nF
ore
cast
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.
�G
oo
dP
rod
uctio
nfo
reca
stsw
illd
ep
en
do
n
•G
oo
dh
istory
ma
tch
•G
oo
din
teg
ratio
no
fw
ell
pe
rform
an
cea
nd
pro
du
ction
con
strain
ts
�W
ell
pe
rform
an
ce
Intro
du
ction
�W
ell
pe
rform
an
ce
•In
flow
curv
es
−P
rod
uctiv
ityin
de
xo
rco
mp
lete
curv
e
•O
utflo
wcu
rve
s
−V
FP
tab
les
�P
rod
uctio
nco
nstra
ints
•C
on
strain
tsre
late
dto
flow
© 2010 -IFP Training3
•C
on
strain
tsre
late
dto
flow
−M
ax
imu
mw
ate
r-cut
or
ma
xim
um
GO
Rp
er
we
ll
−M
ax
imu
mw
ate
rp
rod
uctio
no
rg
as
pro
du
ction
for
ag
rou
po
fw
ells
•C
on
strain
tsre
late
dto
pre
ssure
−M
inim
um
bo
ttom
ho
leflo
win
gp
ressu
re
−M
inim
um
we
llh
ea
dp
ressu
re
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.
Gas
Gas m
etering
Oil m
etering
Psep
.P = sep
aration pressu
re
Surface
choke
Pt
Surface facilities We
lls rep
rese
nta
tion
: Ou
tflow
Pe
rform
an
ce (1
)
Oil m
etering
Oil
choke
Surface facilitiesVertical lift
Safety valve
Fluid produced
© 2010 -IFP Training4
Down hole ch
oke
Well in
flow
PR
PWF
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.
Bottom Hole Flowing Pressure (bar)
250
200
We
lls rep
rese
nta
tion
: Ou
tflow
Pe
rform
an
ce (2
)
Increasing Water cut
Increasing Well Head Pressure
Increasing GOR
Increasing Tubing Size
Bottom Hole Flowing Pressure (bar)
200
150
150
Increasing Water cut
Increasing Well Head Pressure
Increasing GOR
Increasing Tubing Size
© 2010 -IFP Training5
Bottom Hole Flowing Pressure (bar)
500
0400
800
1200
1600
Liq
uid
flow
(m3/d
)
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.
Bottom Hole Flowing Pressure (bar)
250
200
We
ll ca
pa
city
940 m
3/d
We
lls rep
rese
nta
tion
: We
ll con
trol (fix
ed
TH
P)
Bottom Hole Flowing Pressure (bar)
200
150
100
940 m
/d
© 2010 -IFP Training6
Bottom Hole Flowing Pressure (bar)
500
0400
800
1200
1600
IPR: In
flow Perfo
rmance R
elationship
Liq
uid
flow
(m3/d
)
VLP: Vertical L
ift Perfo
rmance
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.
�M
ain
con
trols
•Im
po
sed
Flo
wra
te
−O
il,W
ate
r,G
as,
Liqu
id,
Re
serv
oir
vo
ida
ge
•Im
po
sed
pre
ssure
−T
ub
ing
He
ad
Flo
win
gp
ressu
re
We
ll Co
ntro
ls: Prin
cipa
l use
s in fo
reca
st mo
de
−T
ub
ing
He
ad
Flo
win
gp
ressu
re
−B
otto
mh
ole
flow
ing
pre
ssure
�S
eco
nd
ary
con
trols
•F
low
rate
s
−E
con
om
iclim
its
−R
ate
su
pp
er
limit
pe
rp
ha
se
−M
ax
imu
mra
tios
(Wcu
t,G
OR
,W
GR
)
•P
ressu
res
© 2010 -IFP Training7
•P
ressu
res
−B
HP
an
dT
HP
limit
(low
er
for
ap
rod
uce
r,u
pp
er
for
an
inje
ctor)
−M
ax
imu
md
raw
do
wn
�V
FP
tab
les
are
use
dto
rela
teb
otto
mh
ole
tow
ell
he
ad
pre
ssure
s
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.
�W
ell
con
trols
•W
CO
NP
RO
D:
Co
ntro
ld
ata
for
pro
du
ction
we
lls
•W
EC
ON
:E
con
om
iclim
itd
ata
for
pro
du
ction
we
lls
•W
EF
AC
:W
ell
efficie
ncy
facto
rs(fo
rd
ow
ntim
e)
•W
ELLD
RA
W:
Ma
xim
um
dra
wd
ow
np
er
pro
du
cer
We
ll Co
ntro
ls: Eclip
se k
ey
wo
rds
•W
ELLD
RA
W:
Ma
xim
um
dra
wd
ow
np
er
pro
du
cer
•W
CO
NIN
JE:
Co
ntro
ld
ata
for
inje
ction
we
lls
•W
EC
ON
INJ
:E
con
om
iclim
itd
ata
for
inje
ction
we
lls
�V
LPta
ble
•V
FP
PR
OD
:V
FP
tab
les
pro
du
ction
we
lls
•V
FP
INJ
:V
FP
tab
les
for
inje
ction
we
lls
© 2010 -IFP Training8
�D
ime
nsio
ns
inR
UN
SP
EC
•V
FP
PD
IMS
:P
rod
uctio
nw
ells
VF
Pta
ble
dim
en
sion
s
•V
FP
IDIM
S:
Inje
ction
we
llsV
FP
tab
led
ime
nsio
ns
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.
�In
flow
•P
ressu
red
rop
be
twe
en
cell
an
db
otto
mh
ole
(sectio
n1
)
�O
utflo
w
•P
ressu
reh
ea
db
etw
ee
nco
nn
ectio
na
nd
da
tum
of
VF
Pta
ble
Inflo
w &
Ou
tflow
calcu
latio
ns
•P
ressu
reh
ea
db
etw
ee
nco
nn
ectio
na
nd
da
tum
of
VF
Pta
ble
(sectio
n2
)
•H
ea
dlo
sses
intu
bin
g(se
ction
3)
He
ad
LT
ub
ing
2
33
2
© 2010 -IFP Training9
I -1, j
De
via
ted
we
ll
I+1
, jI, j
Ho
rizo
nta
l we
ll
Re
se
rvo
ir1
22
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.
�In
flow
pe
rform
an
cere
latio
nsh
ip(se
ction
1)
Inflo
w &
Ou
tflow
calcu
latio
ns
Pf)
(Pr
µ kr
CF
Q−
××
=
�W
ellb
ore
pre
ssure
he
ad
(sectio
n2
)
•V
ertica
lw
ell:
hy
dro
static
he
ad
be
twe
en
the
con
ne
ction
ia
nd
the
we
ll’sd
atu
m+
(corre
ction
up
toV
FP
da
tum
de
pth
)
•h
orizo
nta
lw
ell
:h
yd
rosta
tich
ea
d+
friction
ifW
FR
ICo
rM
SW
�P
ressu
red
rop
intu
bin
g(se
ction
3)
•u
seo
fV
ertica
lF
low
Pe
rform
an
ce(V
FP
)ta
ble
sp
rov
ide
din
the
da
tase
t
∆z
g ρ
© 2010 -IFP Training
10
•B
HP
=f
(Q,
TH
P,
Wcu
t,G
OR
,Q
lift)
�R
em
ind
er
•it
isim
po
rtan
tto
de
fine
accu
rate
lyth
eV
FP
tab
les
wh
en
the
inflo
w
dra
wd
ow
nis
low
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.
�V
FP
tab
les
are
ge
ne
rally
ge
ne
rate
db
yw
ell
de
pa
rtme
nt
�It
isre
com
me
nd
ed
•T
ou
seth
eP
VT
corre
spo
nd
ing
top
rod
uce
dflu
ids
•T
og
en
era
teo
ne
tab
lefo
re
ach
va
lue
of
tub
ing
dia
me
ter
Ou
tflow
calcu
latio
ns: V
FP
tab
les g
en
era
tion
•T
og
en
era
teo
ne
tab
lefo
re
ach
va
lue
of
tub
ing
dia
me
ter
•T
og
rou
pw
ells
acco
rdin
gto
the
ird
ev
iatio
n,
com
ple
tion
an
d
pro
du
ced
fluid
�T
he
pa
ram
ete
rsm
ust
cov
er
the
ran
ge
of
va
lue
sw
hich
will
be
rea
che
dd
urin
gth
efo
reca
stsim
ula
tion
s:N
OE
XT
RA
PO
LAT
ION
S!
�S
om
eB
HP
ma
yco
rresp
on
dto
aco
mb
ina
tion
of
pa
ram
ete
rs
© 2010 -IFP Training
11
�S
om
eB
HP
ma
yco
rresp
on
dto
aco
mb
ina
tion
of
pa
ram
ete
rs
ph
ysica
llyim
po
ssible
.
•V
alu
es
hig
he
rth
an
the
ma
xre
serv
oir
pre
ssure
sho
uld
be
giv
en
to
en
sure
tha
tth
ew
ell
flow
ing
con
ditio
ns
will
no
te
nte
rth
efo
rbid
de
n
reg
ion
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.
�W
ell
pe
rform
an
cep
ara
me
ters
are
:
•n
ot
use
dd
urin
gh
istory
ma
tch(W
ells
are
con
trolle
din
flow
rate
)
•u
sed
du
ring
pro
du
ction
fore
casts
(We
llflo
wra
tes
are
dire
ctlylin
ke
dto
we
llp
erfo
rma
nce
)
Ma
tchin
g o
f we
ll pe
rform
an
ce
link
ed
tow
ell
pe
rform
an
ce)
�D
urin
gh
istory
ma
tch
•It
isp
oin
tless
totry
tom
atch
BH
Pa
nd
TH
Pa
slo
ng
as
rese
rvo
irp
ressu
reis
no
tm
atch
ed
•It
ish
igh
lyre
com
me
nd
ed
tom
atch
BH
Pa
nd
TH
Pa
sso
on
as
rese
rvo
irp
ressu
reis
ma
tche
db
yin
trod
ucin
gth
eV
FP
tab
les
an
da
dju
sting
PI.
At
the
be
gin
nin
go
fp
rod
uctio
nfo
reca
sts
© 2010 -IFP Training
12
�A
tth
eb
eg
inn
ing
of
pro
du
ction
fore
casts
•B
HP
an
dT
HP
mu
stb
em
atch
ed
pe
rw
ell
toe
nsu
reth
eco
ntin
uity
from
bo
un
da
ryco
nd
ition
sin
flow
(HM
)to
BC
inp
ressu
re(fo
reca
st)
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.
�B
HP
pe
rw
ell
can
be
mo
difie
db
y
•T
un
ing
of
Co
nn
ectio
nfa
ctors
•In
trod
uctio
no
fp
rod
uctio
nu
ptim
es
−u
seo
bse
rve
dd
aily
Q+
WE
FA
Cin
stea
do
fm
on
thly
av
era
ge
dQ
•u
seo
fW
PIM
ULT
or
mo
difica
tion
of
the
skin
Ma
tchin
g o
f we
ll pe
rform
an
ce : B
HP
pe
r we
ll
•u
seo
fW
PIM
ULT
or
mo
difica
tion
of
the
skin
�R
em
ind
er
:T
un
ing
CF
pe
rla
ye
rm
ay
be
ne
cessa
ryfo
rP
LTm
atch
•th
ein
form
atio
np
rov
ide
db
yth
eP
LT(a
lloca
tion
of
flow
pe
rla
ye
r)m
ust
be
tak
en
into
acco
un
tsin
ceth
em
atch
inP
(Kp
er
lay
er)
•It
isre
com
me
nd
ed
toa
dju
stth
esk
inp
er
(gro
up
of)
lay
ers
© 2010 -IFP Training
13
•It
isre
com
me
nd
ed
toa
dju
stth
esk
inp
er
(gro
up
of)
lay
ers
•U
sein
stan
tan
eo
us
rate
s(n
ot
mo
nth
lya
ve
rag
ed
)a
nd
be
sure
tha
te
ve
ryth
ing
(P,
me
asu
reco
nd
ition
s)is
con
sisten
t
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.
�B
HP
pe
rw
ell
can
be
mo
difie
db
y
•M
od
ificatio
no
fp
ressu
reh
ea
db
etw
ee
nco
nn
ectio
na
nd
da
tum
of
VF
Pta
ble
•M
od
ificatio
no
fV
FP
tab
le
Eclip
seso
lve
sfo
rth
ein
terse
ction
of:
Ma
tchin
g o
f we
ll pe
rform
an
ce : T
HP
pe
r we
ll
�E
clipse
solv
es
for
the
inte
rsectio
no
f:
•Lin
ea
rp
ortio
no
fV
FP
tab
lea
tflo
win
gco
nd
ition
s(G
OR
an
dW
CU
T)
•Lo
cal
IPR
:B
HP
=P
r-
(Q/IP
)
�T
his
inte
rsectio
nm
ay
be
inth
eu
nsta
ble
pa
rto
fth
eV
FP
curv
e;
inth
isca
seth
ere
sults
are
ve
ryse
nsitiv
eto
the
slop
eo
fIP
R
© 2010 -IFP Training
14
of
IPR
�it
isre
com
me
nd
ed
tod
iscretize
ea
chp
ara
me
ter
inV
FP
curv
es
with
en
ou
gh
va
lue
sto
rep
rese
nt
corre
ctlyth
ew
ork
ing
po
int
EP
-R
eservoir S
imulatio
n -
Pro
ductio
n F
orecast -
E.M
.